This was a movie I watched nearly fifteen years ago.
The climax of the movie is that this guy, now super intelligent, tries to merge with the cyber space. He keeps on trying different portals to find the right one. The scientist who made him smart tries to reason with him but he ignores him and banishes him from the cyber world. The scientist as a last resort sets up dynamites inside the lab to stop him but just as the bombs go off, he gets access into the cyberspace.
He states his first crime or act as a cybernetic being would be to call all the telephones in the world.
Just as the film is about to end and the scientist hugs his family, the telephone rings.